擅长:python、mysql、java
<p>来自OpenCV 2.4教程:</p>
<blockquote>
<p><code>pyrDown( tmp, dst, Size( tmp.cols/2, tmp.rows/2 )</code></p>
<p>tmp: The current image, it is initialized with the src original image.</p>
<p>dst: The destination image (to be shown on screen, <strong>supposedly half the input image</strong>)</p>
<p>Size( tmp.cols/2, tmp.rows/2): The destination size. Since we are downsampling, <strong>pyrDown expects half the size the input image</strong> (in this case tmp).</p>
<p>Notice that it is important that the input image can be divided by a factor of two (in both dimensions). Otherwise, an error will be shown.</p>
</blockquote>
<P>这是从C++教程中获取的,但对于Python来说应该是一样的。在</p>